ACTIVITY 1

ACTIVITY 1

ACTIVITY 1

by Miguel Kristofer Cacatian -
Number of replies: 0

 

    1. Platysma
      Origin: Fascia over deltoid and pectoralis major muscles
      Insertion: Mandible, blends with muscles around angle of mouth, and skin of lower face.
      Action: Draws outer part of lower lip inferiorly and posteriorly as in pouting; depresses mandible.

    2. Depressor labii inferioris
      Mandible 

      Action: Depresses lower lip

    3. Orbicularis oris
      Origin: Muscle fibers surrounding opening of mouth.
      Insertion: Skin at corner of mouth
      Action: Closes, protrudes, compresses, and shapes lips

    1. Platysma
      Origin: Fascia over deltoid and pectoralis major muscles
      Insertion: Mandible, blends with muscles around angle of mouth, and skin of lower face.
      Action: Draws outer part of lower lip inferiorly and posteriorly as in pouting; depresses mandible.

    2. Depressor labii inferioris
       

      Action: Depresses lower lip


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